Half of his right to nicholas r



G.v W. MGCORMICK.

Lamp-Wick.

No. 224,203. lafented Feb. 3,1880. y

N-PErERS. PNOTO-LITMOGRAFMER. WASHINGTON, ILC. 'A

- UNITED STATES l PATENT OFFICE.

GEORGE W. MCGORMIGK, OF NEWARK, NEW JERSEY, ASSIGNOR OF ONE- lEIALF OF HIS RIGHT TO NICHOLAS R. HARING, OF SAME PLACE.

LAM P-wloK.

SPECIFICATION forming part of Letters Patent No. 224,203, dated February 3, 1880.A

f I Application filed November 15, 1879. f

To all whom it may concern:

Be it known that I, GEORGE W. MCCOR- MICK, of the city of Newark, in the county of Essex and State of New Jersey, have invented. certain new and useful Improvements in Lamp- Vicks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the ac-v companying drawing, and to letters of refer ence marked thereon, which form a part of this specification.

The object of thisinvention is to produce an increased amount of light by the expenditure of a given quantityrofoil, and to prevent the overiiow of oil upon the outside of the lamps as produced by the wicks heretofore used.

The invention consists, first, in a lamp-wick that has been submerged in a strongsolution of nitrate of potash and alum, and allowed to dry, thus having formed in and upon said wick crystals of the combined salts; second, in the wick, as above prepared, combined with a roll of loose or free cotton wadding, in the manner and for the purposes hereinafter more fully set forth.

Referring to the accompanying drawing, Y

which clearly illustrates lmy invention, letter A represents the lamp-wick, and B the roll of loose cotton wadding before mentioned, which has been secured to said wick at-about the center, leaving the ends thereof free, as vindicated.

The crystallized salts in and upon the'lamp- Wick have the effect to harden said wick, making it less porous, thereby lessening the capillary attractive force, and thus, by not allowinga too profuse supply of oil to the flame, 4o prevent the oil` from overowingf upon the lamp. Thesalts also, by preventinga crustfrom forming upon the burning end of the wick, in-A crease the brilliancy of the flame and pre-` vents it from smoking. Again, the superfluous supply of oil consequent upon the use of the ordinary wicks reduces the temperature of the dame and tends to decrease the production of gaseous vapor, thereby lessening the illuminating power of the flame. My wick, however, by only allowing a sufficient supply of oil vfor the evaporating process, overcomes this grave defect.

The salts used in my wick are not solvent in kerosene-oil.

The loose cotton wadding previously mentioned acts as a filter to the oil, preventing any sediment'or other impurities from gaining access to or clogging the Wick, thus interfering with the illuminating power of the light.

It will therefore be evidentI that a lower grade of oil than is commonly used can be employed, thus saving expense.

In connecting the wick with the cotton waddin-g it is necessary that the wick be sewed thereto and fastened loosely, as indicated atc in the drawing, so as not to obstruct its attractive power.

` I do not claim, broadly, the combination of a lamp-wick with cotton Wadding; but

What do claim, and wish to have secured by Letters Patent, is-.

1. A lamp-wick havingbeen saturatedin a solution of nitrate of potash and alum and subsequently dried, thereby leaving the crystals in and upon said wick, substantially as and for the purposes specified. p

Y2. The combination of the lamp-wick, prepared in the manner herein described,` with a roll of loose or free cotton wadding, one end of said wick being sewed to said cotton wadding, as and for the purposes set forth.

1n testimony that I claim the foregoing I have hereunto set my hand this 10th day of November, 1879.

GEORGE W. MCCORMICK. Witnesses: y

OLIVER BRAKE,I CHARLES H. PELL. 

